java - 如何将 checkBox 绑定(bind)到 boolean 属性？

Question

我最近开始使用vaadin框架。

我有一个包含一些文本字段和一个复选框的表单，我的问题是所有字段都与其属性绑定(bind)，除了复选框？？。

这是表格:

public class ContactForm extends FormLayout {

private Button save = new Button("Save", this::save);
private Button delete = new Button("Delete", this::delete);
private Button cancel = new Button("Cancel", this::cancel);
private TextField firstName = new TextField("First name");
private TextField lastName = new TextField("Last name");
private TextField phone = new TextField("Phone");
private TextField email = new TextField("Email");
private DateField birthDate = new DateField("Birth date");
private CheckBox bookMarks = new CheckBox("BookMarks");

private Contact contact;

// Easily bind forms to beans and manage validation and buffering
private BeanFieldGroup<Contact> formFieldBindings;

public ContactForm() {
    configureComponents();
    buildLayout();
}

private void configureComponents() {...}

private void buildLayout() {...}



void edit(Contact contact) {

    this.contact = contact;
    if (contact != null) {
        // Bind the properties of the contact POJO to fields in this form
        formFieldBindings = BeanFieldGroup.bindFieldsBuffered(contact, this);

        delete.setVisible(contact.getId() != null);
    }

    setVisible(contact != null);
}

@Override
public AddressbookUI getUI() {
    return (AddressbookUI) super.getUI();
}}

这是我的类(class)联系人:

public class Contact implements Serializable, Cloneable {

private Long id;

private String firstName = "";
private String lastName = "";
private String phone = "";
private String email = "";
private Date birthDate;
private Boolean bookMarks;

// getters and setters
...
}

我做错了什么？我应该手动绑定(bind)复选框字段吗？

Answer 1

解决方案是将 addValueChangeListener 添加到复选框，如下所示:

bookMarks.addValueChangeListener(event -> contact.setBookMarks(bookMarks.getValue()));